[https://github.com/markprocess/ultibo-nim](https://github.com/markprocess/ultibo-nim)
If you don't want to clone and build on raspbian, I've added two more options to the readme: 1\. download a zip file, unzip to a freshly fat32-formatted sd, and watch nim blink the led on any model of rpi 2\. in addition to any model of rpi, ultibo supports the qemu implementation of the versatible platform board, so I put an instance of it running in the cloud. Of course it doesn't have an led like an rpi does, but it does have vnc so you can connect and watch the led counter on the screen. p.s. for some reason you need to move your mouse cursor for the vnc screen to update
